blob: b0d8d14df00d4d7d5751130211e541006a829fa0 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <assert.h>
#include <stdint.h>
#include <memory>
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "services/device/geolocation/wifi_data_provider.h"
#include "services/device/geolocation/wifi_polling_policy.h"
namespace device {
// Converts a MAC address stored as an array of uint8_t to a string.
base::string16 MacAddressAsString16(const uint8_t mac_as_int[6]);
// Base class to promote code sharing between platform specific wifi data
// providers. It's optional for specific platforms to derive this, but if they
// do polling behavior is taken care of by this base class, and all the platform
// need do is provide the underlying WLAN access API and polling policy.
// Also designed this way for ease of testing the cross-platform behavior.
class WifiDataProviderCommon : public WifiDataProvider {
// Interface to abstract the low level data OS library call, and to allow
// mocking (hence public).
class WlanApiInterface {
virtual ~WlanApiInterface() {}
// Gets wifi data for all visible access points.
virtual bool GetAccessPointData(WifiData::AccessPointDataSet* data) = 0;
// WifiDataProvider implementation
void StartDataProvider() override;
void StopDataProvider() override;
bool DelayedByPolicy() override;
bool GetData(WifiData* data) override;
~WifiDataProviderCommon() override;
// Returns ownership.
virtual std::unique_ptr<WlanApiInterface> CreateWlanApi() = 0;
// Returns ownership.
virtual std::unique_ptr<WifiPollingPolicy> CreatePollingPolicy() = 0;
// Runs a scan. Calls the callbacks if new data is found.
void DoWifiScanTask();
// Will schedule a scan; i.e. enqueue DoWifiScanTask deferred task.
void ScheduleNextScan(int interval);
WifiData wifi_data_;
// Whether we've successfully completed a scan for WiFi data.
bool is_first_scan_complete_ = false;
// Whether our first scan was delayed due to polling policy.
bool first_scan_delayed_ = false;
// Underlying OS wifi API.
std::unique_ptr<WlanApiInterface> wlan_api_;
// Holder for delayed tasks; takes care of cleanup.
base::WeakPtrFactory<WifiDataProviderCommon> weak_factory_;
} // namespace device